09/03/2026
🏜️ ISDRA ACCESS UPDATE — NDA 5 & BORDER RESTRICTIONS
ASA wants dune visitors to be aware of new federal access restrictions near portions of the U.S.–Mexico border in the Imperial Valley.
The U.S. Navy has established National Defense Area 5 (NDA 5) in support of military operations along the southern border. New signage is being installed prohibiting entry within approximately 60 feet of the border wall, and riders should obey all posted signs and stay out of restricted areas.
The important news for duners: At this time, NDA 5 does NOT affect access to the Imperial Sand Dunes Recreation Area (ISDRA) — including commonly used riding areas, camping areas, staging locations, or normal travel routes within ISDRA.
NDA 5 has also been designated a No Drone Zone, with restrictions on drone operations in the area and potentially substantial fines for violations.
ASA is sharing this information so everyone heading to the dunes knows the rules before they ride. We will continue monitoring the situation and provide updates if access conditions change.
👉 Read the full ASA Latest News update, including the Navy’s official NDA 5 information and access requirements:
https://americansandassociation.org/restricted-access-near-border-wall/
Know before you go. Obey posted closures. Ride responsibly.
We want to make you aware of a recent development affecting federal lands along portions of the U.S.-Mexico border near the Imperial Sand Dunes Recreation Area (ISDRA) region. The U.S. Navy has established National Defense Area 5 (NDA 5), also known as the Southern California–Imperial Valley Natio...
